28 Then afterward I will pour out my spirit on all flesh; your sons and your daughters shall prophesy, your old men shall dream dreams, and your young men shall see visions. 29 Even on the male and female slaves, in those days, I will pour out my spirit. 30 I will show portents in the heavens and on the earth, blood and fire and columns of smoke. 31 The sun shall be turned to darkness, and the moon to blood, before the great and terrible day of the Lord comes. 32 Then everyone who calls on the name of the Lord shall be saved; for in Mount Zion and in Jerusalem there shall be those who escape, as the Lord has said, and among the survivors shall be those whom the Lord calls.
Matthew Henry's Commentary on Joel 2:28-32
Commentary on Joel 2:28-32
(Read Joel 2:28-32)
The promise began to be fulfilled on the day of Pentecost, when the Holy Spirit was poured out, and it was continued in the converting grace and miraculous gifts conferred on both Jews and Gentiles. The judgments of God upon a sinful world, only go before the judgment of the world in the last day. Calling on God supposes knowledge of him, faith in him, desire toward him, dependence on him, and, as evidence of the sincerity of all this, conscientious obedience to him. Those only shall be delivered in the great day, who are now effectually called from sin to God, from self to Christ, from things below to things above.